prEN ISO 6923
油漆和清漆使用高效液相色谱和紫外检测器 (HPLC-UV) 测定涂料和类似产品中的单体二异氰酸酯含量 (ISO 6923:2023)

油漆和清漆使用高效液相色谱和紫外检测器 (HPLC-UV) 测定涂料和类似产品中的单体二异氰酸酯含量 (ISO 6923:2023), 您可以免费下载预览页

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适用范围: This document specifies a method for the quantitative determination of monomeric diisocyanate content in coating materials, adhesives and other liquid or pasty materials. This method is suitable for the quantification of the following monomeric diisocyanates: methylene diphenyl diisocyanate (MDI, 2,4’-MDI and 4,4’-MDI), toluene diisocyanate (TDI, 2,6-TDI, 2,4-TDI), (cis/trans) isophorone diisocyanate (IPDI) and hexamethylene diisocyanate (HDI,1,6-HDI) in various matrices for concentrations ranging from 0,01 % to 2,0 % mass fraction. For higher concentrations, a suitable dilution before the derivatization with p-nitrobenzyl-N-propylamine (PNBPA) is performed. The measurements are carried out using ultra high performance liquid chromatography (UHPLC) with a multiple wavelength detector.

prEN ISO 6923油漆和清漆 使用高效液相色谱和紫外检测器 (HPLC-UV) 测定涂料和类似产品中的单体二异氰酸酯含量 (ISO 6923:2023)